Flushing device for drains



Nov. 24, 1936,

M. B. ACOSTA FLUSHING DEVICE FOR DRAINS F-iled July 29, 1955 Patented`Nov. 1936` UNITED STATES PATENT OFFICE This. invention relates 'toand-has for an object the provision of a. device adapted to beassociated with the drain or a sink, tub or other receptacle in a mannertov enable such drain when clogged or restricted by' foreign substancesto be readily cleared by flushing with a jet of water from a faucet'atthe receptacle ork other convenient source of water supply.

Another object of the invention is to provide a flushing devicestructurally characterized by a -exible plug adapted to be inserted Intothe drain pipe of a receptacle and yto be secured therein againstdisplacement in a position to utilize the -pressure o f the waterinjected into the pipe, to produce a water tight seal around i the plugby expanding the latter so as to positivehr prevent loss of waterpressure, and the 'ejection of water upwardly into .the receptacle.

-With these and other objects in view, the invention consists in thecombination, arrangement andfunctional relationship of elements as setforth inthe following specication and particularly pointed out in theappended claims.

In the accompanying drawing,

Figure 1 is a. view showing partly in side elevation and-partly inperspective, the ushing attachment for drains embodying this invention;

Figure 2 is an enlarged fragmentary sectional view showing the-plugportion of the invention applied to the drain pipe of a sink;

Figure 3 is a detail perspectiveview of a connector embodied in theaforestated plug of theV invention;

Figure 4 is a fragmentary view in side elevation of a socket forattaching the device to a faucet.

In its prsent embodiment, the invention comprises a lengthl of flexiblehose III of rubber o r other suitable material, rto one end of which isi permanently secured an attaching socket II of the plug including adisk portionl from one side of which projects a collar Il vulcanized tothe hose I0. The-bore of the collar I4 extends through the disk portion;and from the periphery of the latter at the opposite 'side thereofprojects an annular flange or skirt I5 which a feathered free edge I6,thus rendering the kskirt'rea'dily flexible and expansible.

disk like body I8 of metal or other rigid mate# rial which is confinedagainst displacement by an internal annular lip I9 on the flange I5. Thebody I8 is provided with an aperture registering with the bore of thecollar I4 so as to provide for the unrestricted ow of water from thehose through the plug, and is further provided with connecting membersin the form of diametrically opposed hooks 20-20 by which the plug isadapted to be secured against displacement when insertedinto the drainof a receptacle such as a sink 2I. v, l

The plug is of an external diameter to snugly fit into the usual drainpipe fitting 22 to which the drain pipe 23 is connected, and whichiitting is provided with a four-armed spider 24 to prevent the loss oflarge articles down the drain,

, as is conventional.

closing relation tothe inlet of the drain pipe.

It is preferable that in order forthe transverse portion 25 of the hooks20 to pass beneath the spider arms, that the flange I5 be jammed tightlyand under stress against the arms so as to function by virtue of itselasticity to aid in securing the plug against displacement.

With the plug thus associated with the drain pipe as is shown inFigure2, it will be manifest that by opening the faucet to which the hose I 0is connected, a high velocity jet of'water at the line pressure willbedischarged into the drain pipe so as to loosen vany foreign substancestherein and flush same through the pipe.

As the flexible tapered portion Ia of the flange I5 is exposed to thepressure of the water, the flange will be expanded against the internalwall of the tting 22 so as to produce a wa-v ter sealed joint betweenthe plug and'fitting,

and thereby positively prevent the loss' of pressure as well as theejection ofvwater rupwardly into the sink and over the operator. Thegreater the water pressure, the more .tightly will is tapered at lia soas to reduce in thickness to the plug be sealed in the tting by theexpanded flange I5 and be secured against axial displacement by thehooks 20-20.

What is claimed is:

l. A ilushing device for drains comprising a conduit adapted forconnection to a source of water supply under pressure; a hollow plug onone end of the conduit through which water from the conduit is adaptedto ilow, the plug having a ilexible annular' flange and'adaptcd tobeinserted into the drain of a sink; and means for detachably securingthe plug against displacement from the drain pipe with said angeinternally exposed to the pressure of water discharged into the drainpipe so as to cause the flange to be expanded into water sealingensagement with the wall of the drain, said means comprising a. rigidbody secured in the plug and having hooks adapted for hooked engagementwith arms of a spider in the drain, the hooks being so related to theange of the plug that when the hooks have hooked engagement with thespider arms the flange will be compressed axially against the arms toaid in preventing displacement ot the plug.

2. A flushing device for drains comprising a cylindrical soft rubberplug adapted to be manually turned and forced downwardly into a. draintoward the spider arms therein and provided with a. continuous vannularwall tapered vertically to provide a. highlyV flexible lower portionadapted to be expanded into water sealed engagement with the wall of thedrain by exposure to the pressure of water Adischarged into the Ydrain,means by which water under pressure can pass to the drain through saidplug; and means carried by the plug for coaction with the arms of thespider upon turning the plug to hold the. plug fixed in the drain and inwater sealed relation to the walls thereof.

MIGUELB. ACOSTA.

